Electronic switching telephone system



Jan. 17, 1961 B. BRIGHTMAN EI'AL 2,968,698

ELECTRONIC SWITCHING TELEPHONE SYSTEM Filed May 21, 1959 104Sheets-Sheet 1 LOCAL OFFICE LONG LONG LONG DISTANCE DISTANCE DISTANCESWITCHING SWITCHING SWITCHING CENTER CENTER CENTER I LOCAL LOCAL LOCALOFFICE OFFICE fi OFFICE I 1 4 LOCAL LOCAL OFFICE OFFICE INVENTORS BARRIEBRIGHTMAN THEODOR FRANKEL ATTORNEY Jan. 17, 1961 B. BRIGHTMAN ET ALELECTRONIC SWITCHING TELEPHONE SYSTEM 104 Sheets-Sheet 2 Filed May 21,1959 SEND (HIGHWAY l HIGHWAY REc. I ll CLAMPING I CIRCUIT sEND s 6FIG.46 REC. s H U 2| 7 Y r 7 3| J 1 3 w LINE 3w E T E EOR TERMINATINGTPI 1 l CONTROL D i UNIT coNNEcToR 4 1 2 SEND FIG. 37 I FIG. 38 l 1 3 gD: I I 3 w A I g I Z '5 I 3lo r f 53 RECEIVE LINE 5w TERMINATING Tm]SEIZE DETECTOR HHD g UNIT 1 CONTROL CIRCUIT g5 SEND FIGS. 39-40 SP'SD I2 a N 2 w 8 a g 0- ltm a H a. V

MULTPLEX 1 DIRECT DIALING PULSE I REGISTER GEN. TP32 m ALLOTTER FIGS.4l-42 Z Z 0 LL 0 Llm $3125 32 esp-1 SLOT PULSE csp-o REGENERATIONCIRCUIT TSP-I FIG.45 TSP-O 35 X scANNER Ixm GENERATOR j FIG. 2A

B. BRIGHTMAN EI'AL ELECTRONIC SWITCHING TELEPHONE SYSTEM Jan. l 7, 1961104 Sheets-Sheet 3 Filed May 21. 1959 DIALING REGISTER 26f CONTROLCONNECTOR TAC-D CONTROL 26b CONNECTOR FIG 38 E R O T S H m D E N FCONTROL "A" FIGS. eo-es CALLING TERMINATING TIME STORE TIME STORE FIGS48-50 FIGS 69-?! Jan. 17, 1961 Filed May 21, 1959 CONTROL CONNECTOR FIG.38

'T' n: '74 ma:

CALLING TIME STORE FIGS. 48-50 B. BRIGHTMAN ETAL ELECTRONIC SWITCHINGTELEPHONE SYSTEM 104 Sheets-Sheet 4 INCOMING w TWO men STORE REGiSTERFIGS 83-88 ALLOTTER FIGS. 41-42 REGISTER FINDER FIGS. 43-44 Jan. 17,1961 B. BRIGHTMAN ETAL 8,

ELECTRONIC swxwcams TELEPHONE SYSTEM Filed May 21, 1959 104 Sheets-Sheet5 w CONTROL REGISTER CONNECTOR FIG.38

FIVE DIGIT STORE FIGS. 5l-59 IL I CONTROL"B" FIGS.7279

POSITION TIME STORE Jan. 17, 1961 B. B'RIGHTMAN ETAL 2,968,698

ELECTRONIC SWITCHING TELEPHONE SYSTEM 104 Sheets-Sheet 6 Filed May 21,1959 RELEASE SCANNER SCANNER RELEASE DETECTOR RING TRIP DETECTOR l I l lI l I l l l l I ROUTE SELECTOR LINK ALLOTTER Jan. 17, 1961 B. BRIGHTMANETAL 2,968,698

- ELECTRONIC SWITCHING TELEPHONE SYSTEM Filed May 21, 1959 104Sheets-Sheet 7 LINK CONNECTOR CALL FINDER FlGS.l|4-ll6 F|s.|25

POSITION COUPLING CIRCUIT FIG.I24

LINK CIRCUIT FIGS. lI7-I23 KEYBOARD CIRCUIT FIGS. I26-l27 Jan. 17, 1961B. BRIGHTMAN ETAL 2,968,698

ELECTRONIC SWITCHING TELEPHONE SYSTEM Filed May 21, 1959; 104Sheets-Sheet 8 AUA FIG.3A

AUDIO AMPLIFIER-AUG BLOCKING OSCILLATOR GATE-BOG GATE FIG.6A FIG.6B

Jan. 17, 1961' BJBRIGHTMAN ETAL 2,

' ELECTRONIC SWITCHING TELEPHONE SYSTEM Filed May 21, 1959 104Sheets-Sheet 9 CONVERTER CVB cva m I -oA FIG.7A

EMITTER FOLLOWER-EFC EMITTER FOLLOWER-EFD EFC I EFD ll B -D A B B 'A BF|G.8A FIG.8B F|G.9A FIG.9B

EMITTER FOLLOWER-EFE EMITTER FOLLOWER-EFJ FIGJOA FIGJOB FIGJIAFLIP-FLIP- FIA g;

D c I OE FIGJSA Y FIG.I3B

Jan. 17, 1961 B. BRIGHTMAN EIAL 2,968,698

ELECTRONIC SWITCHING TELEPHONE SYSTEM Filed May 21, 1959 104Sheets-Sheet l0 FLlP-FLOP-FOB INC Jan. 17, 1961 B. BRIGHTMAN ETAL2,968,698

ELECTRONIC SWITCHING TELEPHONE SYSTEM v Filed May 21, 1959 104Sheets-Sheet 11 HIGH SPEEQ INVERTER ING |2 INVERTER-INK |2 ms 5 INK B AA a A A +|2 FIGZZA F|G.22B F|G.23A F|G.23B

INVERTER-INS INVERTER- INU FIG.24A FIG.24B F|G.25A FIG.25B

' INVERTER-INX INX FIG.26A

EQUALIZER LAB Jan. 17, 1961 B. BRIGHTMAN EIAL 2,968,698

ELECTRONIC SWITCHING TELEPHONE SYSTEM Filed May 21, 1959 104 SheetsSheet12 MONOSTABLE MULTIVIBRATOR-MAA MAA B I00 MS fiqc F|G.28A FIG.28B

HOLDOVER cmcun MMD a NEGATIVE HOLD |-oB HOLDING A OVER PULSES +2 +12F|G.29A FIG.29B

HIGH SPEED AMPLlFtER-PUH 3004 PUH a o 'F|( 3oA FIG.3OB

PUJ

Jan. 17, 1961 B. BRIGHTMAN EI'AL 2,958,698

ELECTRONIC SWITCHING TELEPHONE SYSTEM Filed May 21, 1959 104Sheets-Sheet 13 HIGH SPEED AMPLIFIER-PUM PUM FIG.32A

STA

B 0 INT. A

FIG.33A

FLN B LPF --oA A C .F|G.34A F|G.34B

PHASE SPLlTTER-APA APA N A 0 HA FIG.35A F lG.35B

Jan. 17, 1961 B. BRIGHTMAN ETAL Filed May 21, 1959 104 Sheets-Sheet 14TIME POSITION 81 HIGHWAY ASSIGNMENT HIGHWAYS TIME SLOT 1 2 a 4 5- 5 HOLOCAL TRKS. LOCAL TRKS. LOCAL TRKS. LOCAL TRKS. LOCAL TRKS. LOCAL TRKs.

SERVICE LINE SERVICE LINE SERVKJE 1.111s SERVICE LlNE I I o O2 O3 O4SPARE SPARE |2 28 1 .o. TRKS. 1 .1 TRKS. L,D. TRKS. 1 .o. TRKS. 1 .o.TRKS. 1 .o. TRKS.

29 ANNEUP'ECER TRK P-b' TRK 5 12 P-4 TRK 5%P-5 Tnx is P-s TRK PJTRK'GRRQ TAPE T.A. BUSY MARK BUSY MARK ANNOUNCER TRK.GRR9 SPARE SPARESERVICE 1.111155 LOCAL TRKS.

TRK.GRP-8 UNASSIGNED 32 TEST 7 Jan. 17, 1961 B. BRIGHTMAN ETAL 2,968,698

ELECTRONIC SWITCHING TELEPHONE SYSTEM Filed May 21, 1959 1'04Sheets-Sheet 15 LINE TERMINATING UNIT 3703 FLN BOG 37o2 I a A B smosc. AsoI 1 GATE RECEIVE 1 B704 c 370! I p C D a c I t TPI TOMX. I I PULSEGEN. 9 Z I E o g FLN/3706 C D -31o5 B A B BLK.0SC. I LPF GATE c BOG 57o?FIG.37

CONTROL CONNECTOR TO HIGHWAY I TO HIGHWAY 6 Y no O I Q 0) (I) I I l J.

BOG 380l BOG 3eo2 A BLK.OSC. B A BLK. osc. B

GATE GATE n c D 0 C fig B G A GA' A LPF B 3806 5 G B G 3805 A A SP [I'-O HI-! 0 "I-I' .93 I 0-! HI-G m O iim TO HIGHWAY I TO HIGHWAY 6 M1 5- i9 B E0 0: CC m0: I I m I 1 O BOG BOG A BLK. osc. a A BLK. osc. B AR GATEGATE I FLN C D C 3304 D C 3803 A LPF B B GGA B GGA FIG.38

Jan. 17, 1961 B. BRIGHTMAN ETAL ELECTRONIC SWITCHING TELEPHONE SYSTEM104 Sheets-Sheet 16 Filed May 21, 1959 SEIZE SIGNAL DETECTOR TO CONTROLCONNECTOR AC-SD FOR SEIZE DET.

D A fl M M 7| m 3 C 9 o 3 9 6 3 0 9 8 3 ma A A 3 G A G I G EDCB N z///M5! n 9 A D R J\ 0 s m ET uQFED W N N M WE 9 9 A3 A A 3 5 L 6 G 9 A E 6G 3 N w R I A B I G M 0 I A om B C m o A A T G G n A nm Hx FIG.39

SEIZE DETECTOR CONTROL CIRCUIT Jan. 17, 1961 B. BRIGHTMAN EI'AL2,963,698

ELECTRONIC SWITCHING TELEPHONE SYSTEM 104 Sheets-Sheet 1'7 Filed May 21,1959 TO SLOT T0 CONTROL PULSE REGEN. CONN. FOR

EFE

n D C u E Qmim m a E w I n a w v m 2 R w 0 M U 4 m 4 F V G GR M 1 9 2 TA H P m w e mmm oi 4 4 G I omo R ..A mm D A R m C B A W C EL B\ C W 00 AN. O 4 R I G 1 DL .ET nYYIIIG OL GEN om TA EO SC Jan. 17, 1961 B.BRIGHTMAN ETAL Filed May 21, 1959 104 Sheets-Sheet 18 TO INC. FROMSCANNER GENERATOR REGJ 0R DD REG.I I;|

0 II P STAGE I I 25A I GJD I A a A B I E I 4|o| 4l03 I I I 4104 I 4|os IB A I GGA C) I 4|os A I a c I I I I I I A GGA I I I B I I STAGE N I. I lBINA LI I I I I I 4:09 l I c a I I w I 4I06 I A (-I I I I a c a I GGA II yew I I A A 4H0 I i B INA I I I HOP g ALARM I I I A -I l I (7 I A J ZU 1 E o c a f TO INC. TO INC. REG.| REG.N OR OR .N DDREGJ 3 DDREG TOSEIZE DETECTOR FIG.4I CONTROL CIRCUIT REGISTER ALLOTTER L- 'I TIT I T TJan. 17, 1961 B.BR1GHTMAN EIAL 2,968,698

ELECTRONIC SWITCHING TELEPHONE SYSTEM 104 Sheets-Sheet 20 Filed May 21,1959 TO SCANN ER GENER ATOR STAGE I STAG E N TO REGISTER N REGISTER IFIG.43

REGISTER FINDER

